Speckle noise filtering in ultrasound imaging

Patent 5497777 Issued on March 12, 1996. Estimated Expiration Date:

September 23, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

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Inventors

Application

No. 311698 filed on 09/23/1994

US Classes:

600/443Anatomic image produced by reflective scanning

Examiners

Primary: Jaworski, Francis J.

Attorney, Agent or Firm

Snyder; Marvin

International Class

A61B 008/00

Abstract

The enhancement of ultrasound images is provided through the filtering of signal dependent noise such as speckle noise by dividing the signal into selective subintervals and utilizing discrete wavelet transform and the identification and selection of those wavelet transform coefficients primarily including signal and not those primarily including signal dependent noise.

Other References

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